Tonsil snare



Julel 9, 1925.

' H. w. scHULTr-:s

TONS IL SNARE Filed Oct. 9. 1925 I N VEN TOR Shzlles vA TTORNE Y Patented June 9, 1925i.

UNITED STATES HUGOW. SCHULTES, QF BROOKLYN, NEW YORK.

TONSIL SNARE.

Application led October 9, 1823. Serial No.l 667,434.

To r/ZZ w71 om t may concern.

Be it known that I, HUGO W. Sor-IULTES, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Tonsil Snares, of which the following is a specification.

The main object of this invention-is to provide a tousil snare having a rigid loop and a constrictable wire loop, the latter being attached to a` carriage which may be moved either manually or by the aid of a screw. the purpose for the movement of the carriage being to consti-ict the loop to sever a tonsil. In the tonsil snares heretofore, the means for locking the carriage to the screw has been imperfectly accomplished, with the result that the screw engaging mean-s would slip at a critical Vmoment during the operation and the surgeon would have to repeat the operation, thus causing the patient undue pain.

One of the main objects of my device is to provide `locking means on, the carriage which grips the .screw from diametrically opposite positionsgand thereby rigidly retains th-e screw in mesh with the carriage locking means.

Another object is to provide a device as mentioned having locking means actuated by a trigger, said trigger being adapted to engage a cam at the end of the carriage travel so that the carriage locking means may be released from the screw at saidposition.

These and other objects will become apparent in the description below, in which characters of reference refer Ato like-named parts of the drawing.

Referring briefly to the drawing, Figure 1 is an elevational view of the tonsil snare showing a portion thereof in longitudinal section in order to disclose its various cooperative parts. This view shows the actual size of the snare.

Figure 2 is an exterior side elevational view of the tonsil snare, the loop being shown partly constricted. I

Figure 3 is a bottom plan view of a portion of the device with the rigid loo'p member removed. i

Figure 4 is aV cross sectional view taken on line M of Figure 2. j l

Figure 5 is a side elevational View' of the locking means used with the carriage.

Referring to the drawing in detail, the

numeral 10 indicates the cylindrical body of f the device, which is substantially hollow thruout its length iin order to receive the screw 11 therein. The screw l1 has at one side a flange 12 which is rotatably mounted in a cap 13, the portion of the screw which extends from the opposite end of the cap be.- ing secured to a finger ring 14 having a palm support 15 rigid therewith. Adjacent the screw and at diametrically opposite positions, slots 16 are formed in the wall of the body 10. The forward end 17 of the body is solid and lia-s a block 18 transversely slidable therein, and has a stem 19 provided with a head 20. Said block is provided with an opening 21, and the. stemv 19 projecting from the body has acoil spring 22 wound thereon which normally urges'the head 20 to extended position. The shank 23 has at its lower end a sleeve 24 which slides into an opening 25 and is locked in place by the su block 18. The opposite end of the shank is provided with a rigid loop 26, the interior of said loop having a recess 27 in which a re- .silient wire loop 28fis seated when the latter is fully extended. The shank 23 vis capable of rotation in Aorder to seat the rigidV y loop 26 in a comfortable position in the mouth of a patient, and a pin 29 projecting from the shank seatsinto a notch 30 formed in the face of the body 10 and prevents rotation of the shank during use of the device. The carriage 31, shaped similarly to a block, is slidably mounted on the cylindrical portion of the body 10 and has finger rings 32 projecting from opposite sides. A channel' 33 passing longitudinally thru the block receives the twisted ends 34 of the wire loop 28, said ends being rigidly secured in the channel 33 of the carriage by a thumb screw 35. Aligned with and adjacent the slots 16, the carriage walls are provided with slits 36 of relatively wide proportions, said slits being adapted to slidably receive the jaws 37 and 38 of the carriage locking means. These jaws are rigidly secured to a ring 39 thru the medium of resilient arms 40 and are provided with teeth 41 on their mutually adjacent faces, said teeth being adapted to engage thethreads of the screw 11. A trigger 42 is provided with forked ends 43, the upper end of said forked ends being pivJ otally securedto thes'ides of the 'carria 'e by screws 44. The adjacent surfaces o the fcrkedqends engage carved surfaces 45 of the jaws 37 and urge said jaws inte contact with the screw by .contracting the same. The ridges 46, formed at the edges of the jaws, provide stops for the forked ends of the trigger 42. A trigger release 4'? extends from the cap 13 below the slot 16 and engages one of the forked ends 43 of the trigger 42 and urges said trigger toward the opposite end of the device when the carriage lies at the extreme end of the travel.

The use of the device is as follows. The surgeon applies the rigid loop 26 over the area to be removed. The wire loop in its original position is concealed within the res 2( of the rigid loop. and the latter is then firmly seated upon the flesh. lfhen in this position, the carriage is at the estreme forward end of the body l0, and the twisted ends 34 are secured to said carriage by the thumb 4screw'B, previously.,7 states. The original constriction of the loop 28 is accomplished by inserting the lingers into the rings 32 and the thumb into the ring lhl, the operator gently pulling the rings toward each other. is the tonsil retained in the constricted loop 2S resists the tendency to be removed, the trigger 42 is pulled in the direction indicated by the arrow in Figure 2, thereby engaging the'curved surfaces 45 of the jaws 37 and 38, causing` the tooth surfaces lll of said jaws to engage the threads of the screw ll. in this position, the carriage is lirmly locked to the screw and cannot be slid on the body. At-'rotation of the finger ring l5, additional constriction of the loop 28 is accomplishedand the affectedV part `is sheared fromkits place. As the carriage nears the end of its travel and the trigger 42 is in locked position, the jaws '37 and 38 will be automatically and simultaneously released from engagement with the threads of screw ll by member 1i?, the latter engaging the side of one of the forked ends 43 of the trigger, thus causing the latter to be rotated to the released position shown in Figure' 2.

l claim A tonsil snare comprising a slotted and hollow body, said slots being diametrically opposite each other, a screw rotatable in said body, a linger ring at one end of said screw for rotating the screw, a carriage slidable on said body, means removable from said carriage for locking the latter on the screw comprising a sleeve mountedV in said carriage, arms extending from said sleeve and being housed in the slots of said body, jaws at the ends of said arms, teeth formed on adjacent faces of said jaws, said jaws being movable in slits in the carriage and in the slots of the body, the arms of said jaws beingrresilient and normally urging the latter into disengagedv position, a trigger, forked arms on said trigger pivoted on the sides of said carriage, curved faces-on vsaid jaws, said curved faces projecting through the slits in the carriage, the Yforked arms of the trigger being adapted to engage the curved surfaces of the jaws and urgethe latter'into engagementwith the threads of the screw. j

In testimony whereof I affix my signature.

' HUGO w. soHULTEs. 

